"32 Clips full explosions and detonations.This is my collction that i collected"

Does this mean you are selling someone elses footage that you have found? or did you produce the clips?

Also the clips are no good for compositiing anyway because the smoke/flames leave the frame, so use is limited to how they appear, there's no way you can resize the objects without obvious clipped edges to them.

And the green screen backgrounds are only basic particle or membrane emitters... which can be knocked up in after effects or motion in a few seconds...